CN109116175A - A kind of fire-disaster monitoring device circuit - Google Patents
A kind of fire-disaster monitoring device circuit Download PDFInfo
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- CN109116175A CN109116175A CN201811202495.0A CN201811202495A CN109116175A CN 109116175 A CN109116175 A CN 109116175A CN 201811202495 A CN201811202495 A CN 201811202495A CN 109116175 A CN109116175 A CN 109116175A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
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Abstract
The invention discloses a kind of fire-disaster monitoring device circuits.Advantages of the present invention: leakage current Acquisition Circuit acquires in real time and detects leakage current, leakage current signal is output to control circuit later, the size of control circuit comparison leakage current signal, when leakage current signal is excessive, control circuit exports shutoff signal to cutting circuit, city is electrically cut off cutting circuit, leakage current is avoided to cause fire, it is detected compared to only simple using temperature sensor, it can scent a hidden danger in advance, and directly cut off alternating current, it is safe and efficient, power circuit is powered control circuit and cutting circuit, make control circuit and cutting circuit powered stable, and then make control circuit and cutting circuit the operation is stable.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of fire-disaster monitoring device circuit.
Background technique
With the aggravation of urbanization process, the electrical equipment installed in each occasion is more and more, full of our life.
Various electrical equipment quality are very different, and user itself understands less electrical equipment, violation operation often occurs, easily draws
Electric leakage accident is sent out, if fuse is not cut off the power, electric leakage causes route heating that can cause in time without fusing at the first time
Fire.Electrical equipment distribution at present is wide, and route is interlaced to be buried in wall, and combustible is more in building, once fire occurs
Three-dimensional fire can be quickly become, fire extinguishing difficulty is big, and consequence is serious.
After electrically popularizing, electrical fire is increasingly becoming the leading role in all kinds of fire, currently, electrical fire prison on the market
Control device be it is simple temperature is monitored, leakage current can not be detected.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of fire prison for being able to detect leakage current
Control device circuit.
To achieve the above object, the present invention provides the following technical scheme that a kind of fire-disaster monitoring device circuit, includes:
Power circuit, control circuit, leakage current Acquisition Circuit and cutting circuit, the power circuit connection control circuit and alternating current, give
Control circuit power supply, the leakage current Acquisition Circuit connect external collection point and control circuit, acquire leakage current signal and export
To control circuit, when leakage current signal is more than threshold value, control circuit output shutoff signal, the cutting circuit connection alternating current,
Power circuit and control circuit cut off alternating current and power circuit, the control electricity after receiving the shutoff signal of control circuit output
Road judges whether leakage current signal is excessive after receiving leakage current signal and chooses whether output shutoff signal.
As a further improvement of the present invention, the leakage current Acquisition Circuit includes metering circuit, the acquisition of A phase leakage current
Circuit, B phase leakage current Acquisition Circuit, C phase leakage current Acquisition Circuit and N phase leakage current Acquisition Circuit, the metering circuit difference
With A phase leakage current Acquisition Circuit, B phase leakage current Acquisition Circuit, C phase leakage current Acquisition Circuit, N phase leakage current Acquisition Circuit and control
Circuit connection processed, the A phase leakage current Acquisition Circuit are electrically connected by inductance and A, and the B phase leakage current Acquisition Circuit passes through
Inductance is electrically connected with B, and the C phase leakage current Acquisition Circuit is electrically connected by inductance and C, the N phase leakage current acquisition electricity
Road is electrically connected by inductance and N, and the metering circuit receives and is output to control circuit after calculating leakage current.
As a further improvement of the present invention, the A phase leakage current Acquisition Circuit includes mutual inductor A, the inductor A
It is electrically connected with A, the mutual inductor A is parallel with resistance RIA, and one end of the resistance RIA is grounded after being coupled with resistance RIA1, institute
State resistance RIA the other end be coupled with resistance RIA2 after be grounded, one end of the resistance RIA is coupled to after being coupled with resistance RIA3
Metering circuit, the other end of the resistance RIA are coupled to metering circuit, the metering circuit and resistance after being coupled with resistance RIA4
It is grounded after being coupled with capacitor CIA1 between RIA3, is grounded after capacitor CIA2 is coupled between the metering circuit and resistance RIA4.
As a further improvement of the present invention, the B phase leakage current Acquisition Circuit includes mutual inductor B, the inductor B
It is electrically connected with B, the mutual inductor B is parallel with resistance RIB, and one end of the resistance RIB is grounded after being coupled with resistance RIB1, institute
State resistance RIB the other end be coupled with resistance RIB2 after be grounded, one end of the resistance RIB is coupled to after being coupled with resistance RIB3
Metering circuit, the other end of the resistance RIB are coupled to metering circuit, the metering circuit and resistance after being coupled with resistance RIB4
It is grounded after being coupled with capacitor CIB1 between RIB3, is grounded after capacitor CIB2 is coupled between the metering circuit and resistance RIB4.
As a further improvement of the present invention, the C phase leakage current Acquisition Circuit includes mutual inductor C, the inductor C
It is electrically connected with C, the mutual inductor C is parallel with resistance RIC, and one end of the resistance RIC is grounded after being coupled with resistance RIC1, institute
State resistance RIC the other end be coupled with resistance RIC2 after be grounded, one end of the resistance RIC is coupled to after being coupled with resistance RIC3
Metering circuit, the other end of the resistance RIC are coupled to metering circuit, the metering circuit and resistance after being coupled with resistance RIC4
It is grounded after being coupled with capacitor CIC1 between RIC3, is grounded after capacitor CIC2 is coupled between the metering circuit and resistance RIC4.
As a further improvement of the present invention, the N phase leakage current Acquisition Circuit includes mutual inductor N, the inductor N
Be electrically connected with N, the mutual inductor N parallel have resistance RIN, the resistance RIN be parallel with diode D2 and diode D5's and
Join circuit, one end of the resistance RIN is grounded after being coupled with resistance RIN1, and the other end of the resistance RIN is coupled with resistance
It is grounded after RIN2, one end of the resistance RIN is coupled to metering circuit after being coupled with resistance RIN3, and the resistance RIN's is another
End is coupled to metering circuit after being coupled with resistance RIN4, and capacitor CIN1 is coupled between the metering circuit and resistance RIN3 and is followed by
Ground is grounded after being coupled with capacitor CIN2 between the metering circuit and resistance RIN4.
As a further improvement of the present invention, the metering circuit is coupled with voltage collection circuit, the voltage acquisition electricity
Road includes A phase voltage Acquisition Circuit, B phase voltage Acquisition Circuit and C phase voltage Acquisition Circuit, the A phase voltage Acquisition Circuit
It include R29, R30, R31, R35 and the R37 being serially connected, the R29 is coupled to A phase electricity, and the resistance R37 is coupled to metering
Circuit, the resistance R37 are coupled with the resistance R33 being serially connected and are coupled to metering circuit after resistance R34, the resistance R37
Be coupled with after capacitor CVA1 and capacitor CVA2 and be coupled to metering circuit, the resistance R33 and resistance R34 indirectly, the electricity
Hold CVA1 and capacitor CVA2 indirectly, the B phase voltage Acquisition Circuit include R40, R42, R43, the R49 being serially connected and
R51, the R40 are coupled to B phase electricity, the resistance R51 is coupled to metering circuit, and the resistance R51, which is coupled with, to be serially connected
Metering circuit is coupled to after resistance R44 and resistance R46, the resistance R51 is coupled to after being coupled with capacitor CVB1 and capacitor CVB2
Metering circuit, the resistance R44 and resistance R46 indirectly, the capacitor CVB1 and capacitor CVB2 indirectly, the C phase
Voltage collection circuit includes R56, R57, R58, R63 and the R64 being serially connected, and the R56 is coupled to C phase electricity, the resistance
R64 is coupled to metering circuit, and the resistance R64 is coupled to metering electricity after being coupled with the resistance R60 and resistance R62 being serially connected
Road, the resistance R64, which is coupled with after capacitor CVC1 and capacitor CVC2, is coupled to metering circuit, the resistance R60 and resistance R62 it
Indirectly, the capacitor CVC1 and capacitor CVC2 indirectly.
As a further improvement of the present invention, the power circuit includes power module POW1, voltage stabilizing chip U2 and steady
Chip IC 8 is pressed, the input terminal of the power module P0W1 is coupled to alternating current, and the output end of the power module POW1 is respectively coupled to
It is grounded after electrolytic capacitor E4, capacitor C22, capacitor C21 and capacitor C6, the output end of the power module POW1 is coupled to pressure stabilizing core
The input terminal of piece U2, the output end of the voltage stabilizing chip U2 are coupled to benchmark foot, the voltage stabilizing chip U2 after being coupled with capacitor C33
Benchmark foot be coupled with diode D13 after be grounded, the tie point of the diode D13 and capacitor C33 are coupled with coupling after inductance L2
It is connected to the input pin of voltage stabilizing chip IC8, the input pin of the voltage stabilizing chip IC8 is coupled with electrolytic capacitor E2 and point parallel with one another
It is grounded after C29, the input pin of the voltage stabilizing chip IC8 is coupled with after resistance R47 and is grounded after coupling resistance R48, the pressure stabilizing core
The input pin of piece IC8 is coupled with couple diode (LED) 6 after resistance R50 after be grounded, the resistance R47 and resistance R48 are coupled with electricity
The tie point of appearance C37 and electrolytic capacitor E6, the resistance R47 and resistance R48 are coupled to the feedback foot of voltage stabilizing chip U2, described steady
It is grounded after being coupled with diode (LED) 1 after pressing the output pin of chip IC 8 to be coupled with resistance R61.
As a further improvement of the present invention, the cutting circuit includes triode Q7 and triode Q12, three pole
The B foot of pipe Q7 is coupled to control circuit, and the E foot of the triode Q7 is coupled to the output pin of voltage stabilizing chip IC8, the triode
The E foot of Q7 is coupled to control circuit after being coupled with resistance R32, and the C foot of the triode Q7 is coupled to three after being coupled to resistance R41
The B foot of pole pipe Q12, the B foot of the triode Q12 are grounded after being coupled with resistance R83, and the C foot of the triode Q12 is coupled with phase
The output pin of Voltage stabilizing module POW1 is mutually coupled to after diode D14 and relay M7 in parallel, the relay M7 is electrically connected with city
It connects.
Beneficial effects of the present invention, leakage current Acquisition Circuit acquire in real time and detect leakage current, later believe leakage current
It number is output to control circuit, control circuit compares the size of leakage current signal, when leakage current signal is excessive, control circuit output
Shutoff signal cuts off circuit and city is electrically cut off, avoid leakage current from causing fire, scent a hidden danger in advance to cutting circuit, and straight
Cutting alternating current is connect, safe and efficient, power circuit is powered control circuit and cutting circuit, makes control circuit and cutting circuit
Powered stable, and then make control circuit and cutting circuit the operation is stable.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is the circuit diagram of control circuit in Fig. 1；
Fig. 3 is the circuit diagram that circuit is cut off in Fig. 1；
Fig. 4 is the circuit diagram of power circuit in Fig. 1；
Fig. 5 is the circuit diagram of metering circuit in Fig. 1；
Fig. 6 is the circuit diagram of A phase leakage current Acquisition Circuit and B phase leakage current Acquisition Circuit in Fig. 1；
Fig. 7 is the circuit diagram of C phase leakage current Acquisition Circuit and N phase leakage current Acquisition Circuit in Fig. 1；
Fig. 8 is the circuit diagram of voltage collection circuit in Fig. 1；
Fig. 9 is the connection schematic diagram of leakage current Acquisition Circuit and alternating current.
Description of symbols: 1, power circuit；2, control circuit；3, leakage current Acquisition Circuit；4, circuit is cut off；30, metering electricity
Road；31, A phase leakage current Acquisition Circuit；32, B phase leakage current Acquisition Circuit；33, C phase leakage current Acquisition Circuit；34, N phase is leaked electricity
Flow Acquisition Circuit；5, voltage collection circuit.
Specific embodiment
The present invention is described in further detail below in conjunction with embodiment given by attached drawing.
Shown in referring to Fig.1-Fig. 9, a kind of fire-disaster monitoring device circuit of the present embodiment, it is characterised in that: include: electricity
Source circuit 1, control circuit 2, leakage current Acquisition Circuit 3 and cutting circuit 4, the power circuit 1 connect control circuit 2 and city
Electricity is powered to control circuit 2, and the leakage current Acquisition Circuit 3 connects external collection point and control circuit 2, acquisition leakage current letter
Number and be output to control circuit 2, when leakage current signal is more than threshold value, control circuit 2 exports shutoff signal, the cutting circuit
4 connection alternating currents, power circuit 1 and control circuit 2 receive cutting alternating current and power supply electricity after the shutoff signal that control circuit 2 exports
Road 1, the control circuit 2 judge whether leakage current signal is excessive after receiving leakage current signal and choose whether output cutting letter
Number.
Through the above technical solutions, leakage current Acquisition Circuit 3 acquires and detect leakage current in real time, leakage current is believed later
It number is output to control circuit 2, control circuit 2 monitors the size of leakage current signal, when leakage current signal is more than threshold value, control electricity
Road 2 exports shutoff signal to cutting circuit 4, and city is electrically cut off cutting circuit 4, avoids leakage current from causing fire, compared to only
Simple is detected using temperature sensor, can be scented a hidden danger in advance, and directly cuts off alternating current, safe and efficient, power supply
Circuit 1 is powered control circuit 2 and cutting circuit 4, makes control circuit 2 and cutting 4 powered stable of circuit, and then make to control
Circuit 2 and cutting 4 the operation is stable of circuit.
As a kind of improved specific embodiment, the leakage current Acquisition Circuit 3 includes that metering circuit 30, A phase are leaked
Current collection circuit 31, B phase leakage current Acquisition Circuit 32, C phase leakage current Acquisition Circuit 33 and N phase leakage current Acquisition Circuit 34,
The metering circuit 30 respectively with A phase leakage current Acquisition Circuit 31, B phase leakage current Acquisition Circuit 32, C phase leakage current Acquisition Circuit
33, N phase leakage current Acquisition Circuit 34 and control circuit 2 connect, and the A phase leakage current Acquisition Circuit 31 passes through inductance and A phase electricity
Connection, the B phase leakage current Acquisition Circuit 32 are electrically connected by inductance and B, and the C phase leakage current Acquisition Circuit 33 passes through electricity
Sense is electrically connected with C, and the N phase leakage current Acquisition Circuit 34 is electrically connected by inductance and N, and the metering circuit 30 receives simultaneously
Control circuit 2 is output to after calculating leakage current.
Through the above technical solutions, A phase leakage current Acquisition Circuit 31, B phase leakage current Acquisition Circuit 32, C phase are leaked when acquisition
Current collection circuit 33 and N phase leakage current Acquisition Circuit 34 acquire A phase electricity, B phase electricity, C phase electricity and the electric current of N phase electricity respectively, right
Every line is individually detected, and the stability and accuracy of detection are improved, and metering circuit 30 receives and calculates collected electric leakage
Stream, after leakage current signal is output to control circuit 2, metering circuit 30 receives output leakage current signal after leakage current is calculated
To control circuit 2, reduce the operation pressure of control circuit 2, improves the stability that control circuit 2 controls.
As a kind of improved specific embodiment, the A phase leakage current Acquisition Circuit 31 includes mutual inductor A, described
Inductor A and A is electrically connected, and the mutual inductor A is parallel with resistance RIA, after one end of the resistance RIA is coupled with resistance RIA1
Ground connection, the other end of the resistance RIA are grounded after being coupled with resistance RIA2, and one end of the resistance RIA is coupled with resistance RIA3
After be coupled to metering circuit 30, the other end of the resistance RIA is coupled to metering circuit 30, the meter after being coupled with resistance RIA4
It is grounded after being coupled with capacitor CIA1 between amount circuit 30 and resistance RIA3, is coupled between the metering circuit 30 and resistance RIA4
It is grounded after capacitor CIA2.
Through the above technical solutions, inductor A induction A phase is electric, resistance RIA1, resistance RIA2 capacitor CIA1 and capacitor later
CIA2 is filtered the inductor A electric current incuded, resistance RIA and resistance RIA1, resistance RIA2 capacitor CIA1 and capacitor CIA2
Collective effect further increases filter effect, and resistance RIA3 and resistance RIA4 carry out current limliting, further increases inductor A output
To the stability of the electric current of metering circuit 30.
As a kind of improved specific embodiment, the B phase leakage current Acquisition Circuit 32 includes mutual inductor B, described
Inductor B and B is electrically connected, and the mutual inductor B is parallel with resistance RIB, after one end of the resistance RIB is coupled with resistance RIB1
Ground connection, the other end of the resistance RIB are grounded after being coupled with resistance RIB2, and one end of the resistance RIB is coupled with resistance RIB3
After be coupled to metering circuit 30, the other end of the resistance RIB is coupled to metering circuit 30, the meter after being coupled with resistance RIB4
It is grounded after being coupled with capacitor CIB1 between amount circuit 30 and resistance RIB3, is coupled between the metering circuit 30 and resistance RIB4
It is grounded after capacitor CIB2.
Through the above technical solutions, inductor B induction B phase is electric, resistance RIB1, resistance RIB2 capacitor CIB1 and capacitor later
CIB2 is filtered the inductor B electric current incuded, resistance RIB and resistance RIB1, resistance RIB2 capacitor CIB1 and capacitor CIB2
Collective effect further increases filter effect, and resistance RIB3 and resistance RIB4 carry out current limliting, further increases inductor B output
To the stability of the electric current of metering circuit 30.
As a kind of improved specific embodiment, the C phase leakage current Acquisition Circuit 33 includes mutual inductor C, described
Inductor C and C is electrically connected, and the mutual inductor C is parallel with resistance RIC, after one end of the resistance RIC is coupled with resistance RIC1
Ground connection, the other end of the resistance RIC are grounded after being coupled with resistance RIC2, and one end of the resistance RIC is coupled with resistance RIC3
After be coupled to metering circuit 30, the other end of the resistance RIC is coupled to metering circuit 30, the meter after being coupled with resistance RIC4
It is grounded after being coupled with capacitor CIC1 between amount circuit 30 and resistance RIC3, is coupled between the metering circuit 30 and resistance RIC4
It is grounded after capacitor CIC2.
Through the above technical solutions, inductor C induction C phase is electric, resistance RIC1, resistance RIC2 capacitor CIC1 and capacitor later
CIC2 is filtered the inductor C electric current incuded, resistance RIC and resistance RIC1, resistance RIC2 capacitor CIC1 and capacitor CIC2
Collective effect further increases filter effect, and resistance RIC3 and resistance RIC4 carry out current limliting, further increases inductor C output
To the stability of the electric current of metering circuit 30.
As a kind of improved specific embodiment, the N phase leakage current Acquisition Circuit 34 includes mutual inductor N, described
Inductor N and N is electrically connected, and the mutual inductor N parallel has resistance RIN, the resistance RIN to be parallel with diode D2 and diode
The parallel circuit of D5, one end of the resistance RIN are grounded after being coupled with resistance RIN1, and the other end of the resistance RIN is coupled with
It is grounded after resistance RIN2, one end of the resistance RIN is coupled to metering circuit 30, the resistance RIN after being coupled with resistance RIN3
The other end be coupled with resistance RIN4 after be coupled to metering circuit 30, be coupled with electricity between the metering circuit 30 and resistance RIN3
It is grounded after holding CIN1, is grounded after being coupled with capacitor CIN2 between the metering circuit 30 and resistance RIN4.
Through the above technical solutions, inductor N induction N phase is electric, resistance RIN1, resistance RIN2 capacitor CIN1 and capacitor later
CIN2 is filtered the inductor N electric current incuded, resistance RIN and resistance RIN1, resistance RIN2 capacitor CIN1 and capacitor CIN2
Collective effect further increases filter effect, and resistance RIN3 and resistance RIN4 carry out current limliting, further increases inductor N output
To the stability of the electric current of metering circuit 30, diode D2 and diode D5 are formed into a loop circuit, carry out afterflow, avoid first device
Part damage improves stability when circuit work.
As a kind of improved specific embodiment, the metering circuit 30 is coupled with voltage collection circuit 5, the voltage
Acquisition Circuit 5 includes A phase voltage Acquisition Circuit 5, B phase voltage Acquisition Circuit 5 and C phase voltage Acquisition Circuit 5, the A phase electricity
Pressure Acquisition Circuit 5 includes R29, R30, R31, R35 and the R37 being serially connected, and the R29 is coupled to A phase electricity, the resistance
R37 is coupled to metering circuit 30, and the resistance R37 is coupled with the resistance R33 being serially connected and is coupled to metering electricity after resistance R34
Road 30, the resistance R37 are coupled to metering circuit 30, the resistance R33 and resistance after being coupled with capacitor CVA1 and capacitor CVA2
R34 indirectly, the capacitor CVA1 and capacitor CVA2 indirectly, the B phase voltage Acquisition Circuit 5 includes to be serially connected
R40, R42, R43, R49 and R51, the R40 is coupled to B phase electricity, and the resistance R51 is coupled to metering circuit 30, the electricity
Resistance R51 is coupled to metering circuit 30 after being coupled with the resistance R44 and resistance R46 being serially connected, and the resistance R51 is coupled with capacitor
Be coupled to metering circuit 30 after CVB1 and capacitor CVB2, the resistance R44 and resistance R46 indirectly, the capacitor CVB1 and
Capacitor CVB2 indirectly, the C phase voltage Acquisition Circuit 5 includes R56, R57, R58, R63 and the R64 being serially connected, institute
It states R56 and is coupled to C phase electricity, the resistance R64 is coupled to metering circuit 30, and the resistance R64 is coupled with the resistance being serially connected
Metering circuit 30 is coupled to after R60 and resistance R62, the resistance R64 is coupled to meter after being coupled with capacitor CVC1 and capacitor CVC2
Measure circuit 30, the resistance R60 and resistance R62 indirectly, the capacitor CVC1 and capacitor CVC2 indirectly.
Through the above technical solutions, R29, R30, R31, R35 and R37 divide A phase electricity, it is output to metering electricity later
The accuracy that metering circuit 30 calculates leakage current is improved on road 30, and resistance R33, resistance R34, capacitor CVA1 and capacitor CVA2 will be defeated
The voltage entered to metering circuit 30 is filtered, improve be input to metering circuit 30 voltage stability, R40, R42, R43,
R49 and R51 divides B phase electricity, is output to metering circuit 30 later, improves metering circuit 30 and calculates the accurate of leakage current
Property, the voltage that resistance R44, resistance R46, capacitor CVB1 and capacitor CVB2 will enter into metering circuit 30 is filtered, improves defeated
Enter the stability of the voltage to metering circuit 30, R56, R57, R58, R63 and R64 divide C phase electricity, are output to meter later
Circuit 30 is measured, the accuracy that metering circuit 30 calculates leakage current, resistance R60, resistance R62, capacitor CVC1 and capacitor CVC2 are improved
The voltage that will enter into metering circuit 30 is filtered, and improves the stability for being input to the voltage of metering circuit 30.
As a kind of improved specific embodiment, the power circuit 1 includes power module POW1, voltage stabilizing chip U2
With voltage stabilizing chip IC8, the input terminal of the power module P0W1 is coupled to alternating current, the output end difference of the power module POW1
It is grounded after coupling electrolytic capacitor E4, capacitor C22, capacitor C21 and capacitor C6, the output end of the power module POW1 is coupled to surely
The input terminal of chip U2 is pressed, the output end of the voltage stabilizing chip U2 is coupled to benchmark foot, the pressure stabilizing core after being coupled with capacitor C33
The benchmark foot of piece U2 is grounded after being coupled with diode D13, and the tie point of the diode D13 and capacitor C33 are coupled with inductance L2
It is coupled to the input pin of voltage stabilizing chip IC8 afterwards, the input pin of the voltage stabilizing chip IC8 is coupled with electrolytic capacitor E2 parallel with one another
It is grounded with after point C29, the input pin of the voltage stabilizing chip IC8 is coupled with after resistance R47 and is grounded after coupling resistance R48, described steady
It is grounded after coupling diode (LED) 6 after pressing the input pin of chip IC 8 to be coupled with resistance R50, the resistance R47 and resistance R48 coupling
There are the tie point of capacitor C37 and electrolytic capacitor E6, the resistance R47 and resistance R48 to be coupled to the feedback foot of voltage stabilizing chip U2, institute
The output pin for stating voltage stabilizing chip IC8 is coupled with after resistance R61 be coupled with diode (LED) 1 after be grounded.
Through the above technical solutions, Voltage stabilizing module POW1 receives and exports 12V burning voltage, electrolytic capacitor E4, capacitor C22
It is output to voltage stabilizing chip U2 after being filtered with capacitor C21, improves the stability of output 12V voltage, and reduces voltage stabilizing chip
The fever of U2, capacitor C6 to be input to voltage stabilizing chip U2 carry out decoupling, reduce front stage circuit between influence, capacitor C333 and
Inductance L2 is filtered output signal, improves the stability of output voltage, and the size for adjusting resistance R47 and resistance R48 can be with
Output voltage is adjusted, resistance R50 carries out current limliting to circuit, and 6 indicator light of diode (LED) indicates the working condition of voltage stabilizing chip U2,
Tie point between resistance R47 and resistance R48 is connect with the feedback foot of voltage stabilizing chip U2, voltage stabilizing chip U2 based on the feedback signal into
Row is adjusted, and the stability of output voltage is further increased, and diode D13 is capture diode, electrolytic capacitor E6, the electricity of earth
Hold C37 and inductance L2 to filter jointly, further increases the stability of output voltage, capacitor C33 is start-up capacitance, electrolytic capacitor E2
Decoupling is carried out to the signal for being input to voltage stabilizing chip IC8 with capacitor C29, makes more stable, the diode of voltage stabilizing chip IC8 work
LED1 shows the working condition of voltage stabilizing chip IC8, and resistance R61 connects with diode (LED) 1 improves the stabilization that diode (LED) 1 works
Property.
As a kind of improved specific embodiment, the cutting circuit 4 includes triode Q7 and triode Q12, institute
The B foot for stating triode Q7 is coupled to control circuit 2, and the E foot of the triode Q7 is coupled to the output pin of voltage stabilizing chip IC8, institute
State triode Q7 E foot be coupled with resistance R32 after be coupled to control circuit 2, the C foot of the triode Q7 is coupled to resistance R41
It is coupled to the B foot of triode Q12 afterwards, the B foot of the triode Q12 is grounded after being coupled with resistance R83, the C of the triode Q12
Foot is coupled with the output pin that Voltage stabilizing module POW1 is coupled to after diode D14 and relay M7 parallel with one another, the relay
M7 is electrically connected with city.
Through the above technical solutions, the B foot of triode Q7 receives low level when control circuit 2 does not export shutoff signal
Signal, triode Q7 are in off state, and the B foot of triode Q12 receives low level, and triode Q12 ends, at relay 7
In off state, relay M7 is closed, and circuit works normally；When control circuit 2 exports shutoff signal, the B foot of triode Q7 is connect
High level signal is received, triode Q7 is in the conductive state, and the B foot of triode Q12 receives high level, triode Q12 later
In the conductive state, alternating current is cut off in relay M7 conducting, and diode D14 reversely gives one circuit of back-emf on relay M7,
The back-emf for preventing relay M7 from generating when disconnecting is impacted to circuit or component damage, improves stabilization when circuit work
Property, prolong the service life.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of fire-disaster monitoring device circuit, it is characterised in that: include: power circuit (1), control circuit (2), leakage current are adopted
Collector (3) and cutting circuit (4), power circuit (1) connection control circuit (2) and alternating current, supply to control circuit (2)
Electricity, the leakage current Acquisition Circuit (3) connect external collection point and control circuit (2), acquire leakage current signal and are output to control
Circuit (2) processed, when leakage current signal is more than threshold value, control circuit (2) exports shutoff signal, cutting circuit (4) connection
Alternating current, power circuit (1) and control circuit (2) receive cutting alternating current and power supply electricity after the shutoff signal of control circuit (2) output
Road (1), the control circuit (2) judge whether leakage current signal is excessive after receiving leakage current signal and choose whether output cutting
Signal.
2. fire-disaster monitoring device circuit according to claim 1, it is characterised in that: leakage current Acquisition Circuit (3) packet
Metering circuit (30), A phase leakage current Acquisition Circuit (31), B phase leakage current Acquisition Circuit (32), C phase leakage current acquisition electricity are included
Road (33) and N phase leakage current Acquisition Circuit (34), the metering circuit (30) respectively with A phase leakage current Acquisition Circuit (31), B phase
Leakage current Acquisition Circuit (32), C phase leakage current Acquisition Circuit (33), N phase leakage current Acquisition Circuit (34) and control circuit (2) are even
It connects, the A phase leakage current Acquisition Circuit (31) is electrically connected by inductance and A, and the B phase leakage current Acquisition Circuit (32) passes through
Inductance is electrically connected with B, and the C phase leakage current Acquisition Circuit (33) is electrically connected by inductance and C, and the N phase leakage current is adopted
Collector (34) is electrically connected by inductance and N, and the metering circuit (30) receives and is output to control electricity after calculating leakage current
Road (2).
3. fire-disaster monitoring device circuit according to claim 2, it is characterised in that: the A phase leakage current Acquisition Circuit
It (31) include mutual inductor A, the inductor A and A is electrically connected, and the mutual inductor A is parallel with resistance RIA, the resistance RIA
One end be coupled with resistance RIA1 after be grounded, the other end of the resistance RIA is grounded after being coupled with resistance RIA2, the resistance
One end of RIA is coupled to metering circuit (30) after being coupled with resistance RIA3, and the other end of the resistance RIA is coupled with resistance RIA4
After be coupled to metering circuit (30), be grounded after being coupled with capacitor CIA1 between the metering circuit (30) and resistance RIA3, it is described
It is grounded after being coupled with capacitor CIA2 between metering circuit (30) and resistance RIA4.
4. fire-disaster monitoring device circuit according to claim 3, it is characterised in that: the B phase leakage current Acquisition Circuit
It (32) include mutual inductor B, the inductor B and B is electrically connected, and the mutual inductor B is parallel with resistance RIB, the resistance RIB
One end be coupled with resistance RIB1 after be grounded, the other end of the resistance RIB is grounded after being coupled with resistance RIB2, the resistance
One end of RIB is coupled to metering circuit (30) after being coupled with resistance RIB3, and the other end of the resistance RIB is coupled with resistance RIB4
After be coupled to metering circuit (30), be grounded after being coupled with capacitor CIB1 between the metering circuit (30) and resistance RIB3, it is described
It is grounded after being coupled with capacitor CIB2 between metering circuit (30) and resistance RIB4.
5. fire-disaster monitoring device circuit according to claim 4, it is characterised in that: the C phase leakage current Acquisition Circuit
It (33) include mutual inductor C, the inductor C and C is electrically connected, and the mutual inductor C is parallel with resistance RIC, the resistance RIC
One end be coupled with resistance RIC1 after be grounded, the other end of the resistance RIC is grounded after being coupled with resistance RIC2, the resistance
One end of RIC is coupled to metering circuit (30) after being coupled with resistance RIC3, and the other end of the resistance RIC is coupled with resistance RIC4
After be coupled to metering circuit (30), be grounded after being coupled with capacitor CIC1 between the metering circuit (30) and resistance RIC3, it is described
It is grounded after being coupled with capacitor CIC2 between metering circuit (30) and resistance RIC4.
6. fire-disaster monitoring device circuit according to claim 5, it is characterised in that: the N phase leakage current Acquisition Circuit
It (34) include mutual inductor N, the inductor N and N is electrically connected, and the mutual inductor N parallel has resistance RIN, the resistance RIN
It is parallel with the parallel circuit of diode D2 Yu diode D5, one end of the resistance RIN is grounded after being coupled with resistance RIN1, described
The other end of resistance RIN is grounded after being coupled with resistance RIN2, and one end of the resistance RIN is coupled to meter after being coupled with resistance RIN3
It measures circuit (30), the other end of the resistance RIN is coupled to metering circuit (30), the metering circuit after being coupled with resistance RIN4
(30) it is grounded after being coupled with capacitor CIN1 between resistance RIN3, is coupled with electricity between the metering circuit (30) and resistance RIN4
It is grounded after holding CIN2.
7. fire-disaster monitoring device circuit according to claim 6, it is characterised in that: the metering circuit (30) is coupled with electricity
It presses Acquisition Circuit (5), the voltage collection circuit (5) includes A phase voltage Acquisition Circuit (5), B phase voltage Acquisition Circuit (5)
With C phase voltage Acquisition Circuit (5), the A phase voltage Acquisition Circuit (5) include R29, R30, R31, the R35 being serially connected and
R37, the R29 are coupled to A phase electricity, and the resistance R37 is coupled to metering circuit (30), and the resistance R37 is coupled with mutual string
It is coupled to after the resistance R33 and resistance R34 of connection metering circuit (30), the resistance R37 is coupled with capacitor CVA1 and capacitor CVA2
After be coupled to metering circuit (30), the resistance R33 and resistance R34 indirectly, between the capacitor CVA1 and capacitor CVA2
Ground connection, the B phase voltage Acquisition Circuit (5) includes R40, R42, R43, R49 and the R51 being serially connected, and the R40 is coupled to
B phase electricity, the resistance R51 are coupled to metering circuit (30), and the resistance R51 is coupled with the resistance R44 and resistance being serially connected
It is coupled to after R46 metering circuit (30), the resistance R51 is coupled to metering circuit after being coupled with capacitor CVB1 and capacitor CVB2
(30), the resistance R44 and resistance R46 indirectly, the capacitor CVB1 and capacitor CVB2 indirectly, the C phase voltage
Acquisition Circuit (5) includes R56, R57, R58, R63 and the R64 being serially connected, and the R56 is coupled to C phase electricity, the resistance
R64 is coupled to metering circuit (30), and the resistance R64 is coupled to metering after being coupled with the resistance R60 and resistance R62 being serially connected
Circuit (30), the resistance R64 are coupled to metering circuit (30) after being coupled with capacitor CVC1 and capacitor CVC2, the resistance R60
With resistance R62 indirectly, the capacitor CVC1 and capacitor CVC2 indirectly.
8. fire-disaster monitoring device circuit according to claim 7, it is characterised in that: the power circuit (1) includes electricity
Source module POW1, voltage stabilizing chip U2 and voltage stabilizing chip IC8, the input terminal of the power module P0W1 are coupled to alternating current, the electricity
The output end of source module POW1 is grounded after being respectively coupled to electrolytic capacitor E4, capacitor C22, capacitor C21 and capacitor C6, the power supply mould
The output end of block POW1 is coupled to the input terminal of voltage stabilizing chip U2, after the output end of the voltage stabilizing chip U2 is coupled with capacitor C33
It is coupled to benchmark foot, the benchmark foot of the voltage stabilizing chip U2 is grounded after being coupled with diode D13, the diode D13 and capacitor
The tie point of C33 is coupled with the input pin that voltage stabilizing chip IC8 is coupled to after inductance L2, the input pin coupling of the voltage stabilizing chip IC8
It is grounded after being connected to electrolytic capacitor E2 and point C29 parallel with one another, after the input pin of the voltage stabilizing chip IC8 is coupled with resistance R47
Be grounded after coupling resistance R48, the input pin of the voltage stabilizing chip IC8 is coupled with couple diode (LED) 6 after resistance R50 after be grounded,
The resistance R47 and resistance R48 is coupled with capacitor C37 and electrolytic capacitor E6, the tie point coupling of the resistance R47 and resistance R48
It is connected to the feedback foot of voltage stabilizing chip U2, the output pin of the voltage stabilizing chip IC8 is coupled with diode (LED) 1 after being coupled with resistance R61
After be grounded.
9. fire-disaster monitoring device circuit according to claim 8, it is characterised in that: the cutting circuit (4) includes three
Pole pipe Q7 and triode Q12, the B foot of the triode Q7 are coupled to control circuit (2), and the E foot of the triode Q7 is coupled to
The output pin of voltage stabilizing chip IC8, the E foot of the triode Q7 are coupled to control circuit (2) after being coupled with resistance R32, and described three
The C foot of pole pipe Q7 is coupled to the B foot that triode Q12 is coupled to after resistance R41, and the B foot of the triode Q12 is coupled with resistance
It is grounded after R83, the C foot of the triode Q12 is coupled to pressure stabilizing mould after being coupled with diode D14 and relay M7 parallel with one another
The output pin of block POW1, the relay M7 are electrically connected with city.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202495.0A CN109116175A (en) | 2018-10-16 | 2018-10-16 | A kind of fire-disaster monitoring device circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202495.0A CN109116175A (en) | 2018-10-16 | 2018-10-16 | A kind of fire-disaster monitoring device circuit |
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| CN109116175A true CN109116175A (en) | 2019-01-01 |
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| CN201811202495.0A Pending CN109116175A (en) | 2018-10-16 | 2018-10-16 | A kind of fire-disaster monitoring device circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090103856A (en) * | 2009-08-27 | 2009-10-01 | 김보경 | Insulation Monitoring System |
| JP2012005193A (en) * | 2010-06-15 | 2012-01-05 | Fuji Electric Fa Components & Systems Co Ltd | Leakage cutoff unit and leakage detector |
| CN102360037A (en) * | 2011-06-27 | 2012-02-22 | 深圳市英威腾电源有限公司 | Monitoring device for electric leakage of power supply and protection system for electric leakage of power supply |
| US20130076369A1 (en) * | 2010-03-30 | 2013-03-28 | Ams Ag | Detection circuit and method for operating a detection circuit |
| US20150233996A1 (en) * | 2014-02-14 | 2015-08-20 | Samsung Electronics Co., Ltd. | Circuit of measuring leakage current in a semiconductor integrated circuit |
| CN106875619A (en) * | 2017-04-19 | 2017-06-20 | 许昌许继低压电器有限公司 | A kind of Combined electric appliance fire disaster monitoring probe |
| CN209496094U (en) * | 2018-10-16 | 2019-10-15 | 浙江强泰能源科技有限公司 | A kind of fire-disaster monitoring device circuit |
-
2018
- 2018-10-16 CN CN201811202495.0A patent/CN109116175A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090103856A (en) * | 2009-08-27 | 2009-10-01 | 김보경 | Insulation Monitoring System |
| US20130076369A1 (en) * | 2010-03-30 | 2013-03-28 | Ams Ag | Detection circuit and method for operating a detection circuit |
| JP2012005193A (en) * | 2010-06-15 | 2012-01-05 | Fuji Electric Fa Components & Systems Co Ltd | Leakage cutoff unit and leakage detector |
| CN102360037A (en) * | 2011-06-27 | 2012-02-22 | 深圳市英威腾电源有限公司 | Monitoring device for electric leakage of power supply and protection system for electric leakage of power supply |
| US20150233996A1 (en) * | 2014-02-14 | 2015-08-20 | Samsung Electronics Co., Ltd. | Circuit of measuring leakage current in a semiconductor integrated circuit |
| CN106875619A (en) * | 2017-04-19 | 2017-06-20 | 许昌许继低压电器有限公司 | A kind of Combined electric appliance fire disaster monitoring probe |
| CN209496094U (en) * | 2018-10-16 | 2019-10-15 | 浙江强泰能源科技有限公司 | A kind of fire-disaster monitoring device circuit |
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